X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=src%2Fintel%2Fperf%2Fgen_perf.c;h=ba1b4f8b127e3cf0a4cc18a6e2b393c87d38108f;hb=a777b25350cce0a97243405fa129eca386aecda2;hp=38dc0166106327ca8effe057d03526ae1cd6d08a;hpb=8490b7d917c46951e3bc6708000fb542350b814b;p=mesa.git diff --git a/src/intel/perf/gen_perf.c b/src/intel/perf/gen_perf.c index 38dc0166106..ba1b4f8b127 100644 --- a/src/intel/perf/gen_perf.c +++ b/src/intel/perf/gen_perf.c @@ -36,369 +36,25 @@ #include #include "common/gen_gem.h" -#include "gen_perf.h" -#include "gen_perf_regs.h" -#include "perf/gen_perf_mdapi.h" -#include "perf/gen_perf_metrics.h" #include "dev/gen_debug.h" #include "dev/gen_device_info.h" + +#include "perf/gen_perf.h" +#include "perf/gen_perf_regs.h" +#include "perf/gen_perf_mdapi.h" +#include "perf/gen_perf_metrics.h" +#include "perf/gen_perf_private.h" + #include "util/bitscan.h" +#include "util/macros.h" #include "util/mesa-sha1.h" #include "util/u_math.h" #define FILE_DEBUG_FLAG DEBUG_PERFMON -#define MI_RPC_BO_SIZE 4096 -#define MI_FREQ_START_OFFSET_BYTES (3072) -#define MI_RPC_BO_END_OFFSET_BYTES (MI_RPC_BO_SIZE / 2) -#define MI_FREQ_END_OFFSET_BYTES (3076) - -#define INTEL_MASK(high, low) (((1u<<((high)-(low)+1))-1)<<(low)) - -#define GEN7_RPSTAT1 0xA01C -#define GEN7_RPSTAT1_CURR_GT_FREQ_SHIFT 7 -#define GEN7_RPSTAT1_CURR_GT_FREQ_MASK INTEL_MASK(13, 7) -#define GEN7_RPSTAT1_PREV_GT_FREQ_SHIFT 0 -#define GEN7_RPSTAT1_PREV_GT_FREQ_MASK INTEL_MASK(6, 0) - -#define GEN9_RPSTAT0 0xA01C -#define GEN9_RPSTAT0_CURR_GT_FREQ_SHIFT 23 -#define GEN9_RPSTAT0_CURR_GT_FREQ_MASK INTEL_MASK(31, 23) -#define GEN9_RPSTAT0_PREV_GT_FREQ_SHIFT 0 -#define GEN9_RPSTAT0_PREV_GT_FREQ_MASK INTEL_MASK(8, 0) - -#define GEN6_SO_PRIM_STORAGE_NEEDED 0x2280 -#define GEN7_SO_PRIM_STORAGE_NEEDED(n) (0x5240 + (n) * 8) -#define GEN6_SO_NUM_PRIMS_WRITTEN 0x2288 -#define GEN7_SO_NUM_PRIMS_WRITTEN(n) (0x5200 + (n) * 8) - -#define MAP_READ (1 << 0) -#define MAP_WRITE (1 << 1) #define OA_REPORT_INVALID_CTX_ID (0xffffffff) -/** - * Periodic OA samples are read() into these buffer structures via the - * i915 perf kernel interface and appended to the - * perf_ctx->sample_buffers linked list. When we process the - * results of an OA metrics query we need to consider all the periodic - * samples between the Begin and End MI_REPORT_PERF_COUNT command - * markers. - * - * 'Periodic' is a simplification as there are other automatic reports - * written by the hardware also buffered here. - * - * Considering three queries, A, B and C: - * - * Time ----> - * ________________A_________________ - * | | - * | ________B_________ _____C___________ - * | | | | | | - * - * And an illustration of sample buffers read over this time frame: - * [HEAD ][ ][ ][ ][ ][ ][ ][ ][TAIL ] - * - * These nodes may hold samples for query A: - * [ ][ ][ A ][ A ][ A ][ A ][ A ][ ][ ] - * - * These nodes may hold samples for query B: - * [ ][ ][ B ][ B ][ B ][ ][ ][ ][ ] - * - * These nodes may hold samples for query C: - * [ ][ ][ ][ ][ ][ C ][ C ][ C ][ ] - * - * The illustration assumes we have an even distribution of periodic - * samples so all nodes have the same size plotted against time: - * - * Note, to simplify code, the list is never empty. - * - * With overlapping queries we can see that periodic OA reports may - * relate to multiple queries and care needs to be take to keep - * track of sample buffers until there are no queries that might - * depend on their contents. - * - * We use a node ref counting system where a reference ensures that a - * node and all following nodes can't be freed/recycled until the - * reference drops to zero. - * - * E.g. with a ref of one here: - * [ 0 ][ 0 ][ 1 ][ 0 ][ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] - * - * These nodes could be freed or recycled ("reaped"): - * [ 0 ][ 0 ] - * - * These must be preserved until the leading ref drops to zero: - * [ 1 ][ 0 ][ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] - * - * When a query starts we take a reference on the current tail of - * the list, knowing that no already-buffered samples can possibly - * relate to the newly-started query. A pointer to this node is - * also saved in the query object's ->oa.samples_head. - * - * E.g. starting query A while there are two nodes in .sample_buffers: - * ________________A________ - * | - * - * [ 0 ][ 1 ] - * ^_______ Add a reference and store pointer to node in - * A->oa.samples_head - * - * Moving forward to when the B query starts with no new buffer nodes: - * (for reference, i915 perf reads() are only done when queries finish) - * ________________A_______ - * | ________B___ - * | | - * - * [ 0 ][ 2 ] - * ^_______ Add a reference and store pointer to - * node in B->oa.samples_head - * - * Once a query is finished, after an OA query has become 'Ready', - * once the End OA report has landed and after we we have processed - * all the intermediate periodic samples then we drop the - * ->oa.samples_head reference we took at the start. - * - * So when the B query has finished we have: - * ________________A________ - * | ______B___________ - * | | | - * [ 0 ][ 1 ][ 0 ][ 0 ][ 0 ] - * ^_______ Drop B->oa.samples_head reference - * - * We still can't free these due to the A->oa.samples_head ref: - * [ 1 ][ 0 ][ 0 ][ 0 ] - * - * When the A query finishes: (note there's a new ref for C's samples_head) - * ________________A_________________ - * | | - * | _____C_________ - * | | | - * [ 0 ][ 0 ][ 0 ][ 0 ][ 1 ][ 0 ][ 0 ] - * ^_______ Drop A->oa.samples_head reference - * - * And we can now reap these nodes up to the C->oa.samples_head: - * [ X ][ X ][ X ][ X ] - * keeping -> [ 1 ][ 0 ][ 0 ] - * - * We reap old sample buffers each time we finish processing an OA - * query by iterating the sample_buffers list from the head until we - * find a referenced node and stop. - * - * Reaped buffers move to a perfquery.free_sample_buffers list and - * when we come to read() we first look to recycle a buffer from the - * free_sample_buffers list before allocating a new buffer. - */ -struct oa_sample_buf { - struct exec_node link; - int refcount; - int len; - uint8_t buf[I915_PERF_OA_SAMPLE_SIZE * 10]; - uint32_t last_timestamp; -}; - -/** - * gen representation of a performance query object. - * - * NB: We want to keep this structure relatively lean considering that - * applications may expect to allocate enough objects to be able to - * query around all draw calls in a frame. - */ -struct gen_perf_query_object -{ - const struct gen_perf_query_info *queryinfo; - - /* See query->kind to know which state below is in use... */ - union { - struct { - - /** - * BO containing OA counter snapshots at query Begin/End time. - */ - void *bo; - - /** - * Address of mapped of @bo - */ - void *map; - - /** - * The MI_REPORT_PERF_COUNT command lets us specify a unique - * ID that will be reflected in the resulting OA report - * that's written by the GPU. This is the ID we're expecting - * in the begin report and the the end report should be - * @begin_report_id + 1. - */ - int begin_report_id; - - /** - * Reference the head of the brw->perfquery.sample_buffers - * list at the time that the query started (so we only need - * to look at nodes after this point when looking for samples - * related to this query) - * - * (See struct brw_oa_sample_buf description for more details) - */ - struct exec_node *samples_head; - - /** - * false while in the unaccumulated_elements list, and set to - * true when the final, end MI_RPC snapshot has been - * accumulated. - */ - bool results_accumulated; - - /** - * Frequency of the GT at begin and end of the query. - */ - uint64_t gt_frequency[2]; - - /** - * Accumulated OA results between begin and end of the query. - */ - struct gen_perf_query_result result; - } oa; - - struct { - /** - * BO containing starting and ending snapshots for the - * statistics counters. - */ - void *bo; - } pipeline_stats; - }; -}; - -struct gen_perf_context { - struct gen_perf_config *perf; - - void * ctx; /* driver context (eg, brw_context) */ - void * bufmgr; - const struct gen_device_info *devinfo; - - uint32_t hw_ctx; - int drm_fd; - - /* The i915 perf stream we open to setup + enable the OA counters */ - int oa_stream_fd; - - /* An i915 perf stream fd gives exclusive access to the OA unit that will - * report counter snapshots for a specific counter set/profile in a - * specific layout/format so we can only start OA queries that are - * compatible with the currently open fd... - */ - int current_oa_metrics_set_id; - int current_oa_format; - - /* List of buffers containing OA reports */ - struct exec_list sample_buffers; - - /* Cached list of empty sample buffers */ - struct exec_list free_sample_buffers; - - int n_active_oa_queries; - int n_active_pipeline_stats_queries; - - /* The number of queries depending on running OA counters which - * extends beyond brw_end_perf_query() since we need to wait until - * the last MI_RPC command has parsed by the GPU. - * - * Accurate accounting is important here as emitting an - * MI_REPORT_PERF_COUNT command while the OA unit is disabled will - * effectively hang the gpu. - */ - int n_oa_users; - - /* To help catch an spurious problem with the hardware or perf - * forwarding samples, we emit each MI_REPORT_PERF_COUNT command - * with a unique ID that we can explicitly check for... - */ - int next_query_start_report_id; - - /** - * An array of queries whose results haven't yet been assembled - * based on the data in buffer objects. - * - * These may be active, or have already ended. However, the - * results have not been requested. - */ - struct gen_perf_query_object **unaccumulated; - int unaccumulated_elements; - int unaccumulated_array_size; - - /* The total number of query objects so we can relinquish - * our exclusive access to perf if the application deletes - * all of its objects. (NB: We only disable perf while - * there are no active queries) - */ - int n_query_instances; -}; - -const struct gen_perf_query_info* -gen_perf_query_info(const struct gen_perf_query_object *query) -{ - return query->queryinfo; -} - -struct gen_perf_context * -gen_perf_new_context(void *parent) -{ - struct gen_perf_context *ctx = rzalloc(parent, struct gen_perf_context); - if (! ctx) - fprintf(stderr, "%s: failed to alloc context\n", __func__); - return ctx; -} - -struct gen_perf_config * -gen_perf_config(struct gen_perf_context *ctx) -{ - return ctx->perf; -} - -struct gen_perf_query_object * -gen_perf_new_query(struct gen_perf_context *perf_ctx, unsigned query_index) -{ - const struct gen_perf_query_info *query = - &perf_ctx->perf->queries[query_index]; - struct gen_perf_query_object *obj = - calloc(1, sizeof(struct gen_perf_query_object)); - - if (!obj) - return NULL; - - obj->queryinfo = query; - - perf_ctx->n_query_instances++; - return obj; -} - -int -gen_perf_active_queries(struct gen_perf_context *perf_ctx, - const struct gen_perf_query_info *query) -{ - assert(perf_ctx->n_active_oa_queries == 0 || perf_ctx->n_active_pipeline_stats_queries == 0); - - switch (query->kind) { - case GEN_PERF_QUERY_TYPE_OA: - case GEN_PERF_QUERY_TYPE_RAW: - return perf_ctx->n_active_oa_queries; - break; - - case GEN_PERF_QUERY_TYPE_PIPELINE: - return perf_ctx->n_active_pipeline_stats_queries; - break; - - default: - unreachable("Unknown query type"); - break; - } -} - -static inline uint64_t to_user_pointer(void *ptr) -{ - return (uintptr_t) ptr; -} - static bool is_dir_or_link(const struct dirent *entry, const char *parent_dir) { @@ -424,6 +80,9 @@ get_sysfs_dev_dir(struct gen_perf_config *perf, int fd) perf->sysfs_dev_dir[0] = '\0'; + if (unlikely(INTEL_DEBUG & DEBUG_NO_OACONFIG)) + return true; + if (fstat(fd, &sb)) { DBG("Failed to stat DRM fd\n"); return false; @@ -513,41 +172,26 @@ read_sysfs_drm_device_file_uint64(struct gen_perf_config *perf, return read_file_uint64(buf, value); } -static inline struct gen_perf_query_info * -append_query_info(struct gen_perf_config *perf, int max_counters) -{ - struct gen_perf_query_info *query; - - perf->queries = reralloc(perf, perf->queries, - struct gen_perf_query_info, - ++perf->n_queries); - query = &perf->queries[perf->n_queries - 1]; - memset(query, 0, sizeof(*query)); - - if (max_counters > 0) { - query->max_counters = max_counters; - query->counters = - rzalloc_array(perf, struct gen_perf_query_counter, max_counters); - } - - return query; -} - static void register_oa_config(struct gen_perf_config *perf, + const struct gen_device_info *devinfo, const struct gen_perf_query_info *query, uint64_t config_id) { - struct gen_perf_query_info *registered_query = append_query_info(perf, 0); + struct gen_perf_query_info *registered_query = + gen_perf_append_query_info(perf, 0); *registered_query = *query; + registered_query->oa_format = devinfo->gen >= 8 ? + I915_OA_FORMAT_A32u40_A4u32_B8_C8 : I915_OA_FORMAT_A45_B8_C8; registered_query->oa_metrics_set_id = config_id; DBG("metric set registered: id = %" PRIu64", guid = %s\n", registered_query->oa_metrics_set_id, query->guid); } static void -enumerate_sysfs_metrics(struct gen_perf_config *perf) +enumerate_sysfs_metrics(struct gen_perf_config *perf, + const struct gen_device_info *devinfo) { DIR *metricsdir = NULL; struct dirent *metric_entry; @@ -582,7 +226,8 @@ enumerate_sysfs_metrics(struct gen_perf_config *perf) continue; } - register_oa_config(perf, (const struct gen_perf_query_info *)entry->data, id); + register_oa_config(perf, devinfo, + (const struct gen_perf_query_info *)entry->data, id); } else DBG("metric set not known by mesa (skipping)\n"); } @@ -590,6 +235,16 @@ enumerate_sysfs_metrics(struct gen_perf_config *perf) closedir(metricsdir); } +static void +add_all_metrics(struct gen_perf_config *perf, + const struct gen_device_info *devinfo) +{ + hash_table_foreach(perf->oa_metrics_table, entry) { + const struct gen_perf_query_info *query = entry->data; + register_oa_config(perf, devinfo, query, 0); + } +} + static bool kernel_has_dynamic_config_support(struct gen_perf_config *perf, int fd) { @@ -673,20 +328,21 @@ i915_add_config(struct gen_perf_config *perf, int fd, memcpy(i915_config.uuid, guid, sizeof(i915_config.uuid)); i915_config.n_mux_regs = config->n_mux_regs; - i915_config.mux_regs_ptr = to_user_pointer(config->mux_regs); + i915_config.mux_regs_ptr = to_const_user_pointer(config->mux_regs); i915_config.n_boolean_regs = config->n_b_counter_regs; - i915_config.boolean_regs_ptr = to_user_pointer(config->b_counter_regs); + i915_config.boolean_regs_ptr = to_const_user_pointer(config->b_counter_regs); i915_config.n_flex_regs = config->n_flex_regs; - i915_config.flex_regs_ptr = to_user_pointer(config->flex_regs); + i915_config.flex_regs_ptr = to_const_user_pointer(config->flex_regs); int ret = gen_ioctl(fd, DRM_IOCTL_I915_PERF_ADD_CONFIG, &i915_config); return ret > 0 ? ret : 0; } static void -init_oa_configs(struct gen_perf_config *perf, int fd) +init_oa_configs(struct gen_perf_config *perf, int fd, + const struct gen_device_info *devinfo) { hash_table_foreach(perf->oa_metrics_table, entry) { const struct gen_perf_query_info *query = entry->data; @@ -694,7 +350,7 @@ init_oa_configs(struct gen_perf_config *perf, int fd) if (gen_perf_load_metric_id(perf, query->guid, &config_id)) { DBG("metric set: %s (already loaded)\n", query->guid); - register_oa_config(perf, query, config_id); + register_oa_config(perf, devinfo, query, config_id); continue; } @@ -705,7 +361,7 @@ init_oa_configs(struct gen_perf_config *perf, int fd) continue; } - register_oa_config(perf, query, ret); + register_oa_config(perf, devinfo, query, ret); DBG("metric set: %s (added)\n", query->guid); } } @@ -751,11 +407,16 @@ init_oa_sys_vars(struct gen_perf_config *perf, const struct gen_device_info *dev { uint64_t min_freq_mhz = 0, max_freq_mhz = 0; - if (!read_sysfs_drm_device_file_uint64(perf, "gt_min_freq_mhz", &min_freq_mhz)) - return false; + if (likely(!(INTEL_DEBUG & DEBUG_NO_OACONFIG))) { + if (!read_sysfs_drm_device_file_uint64(perf, "gt_min_freq_mhz", &min_freq_mhz)) + return false; - if (!read_sysfs_drm_device_file_uint64(perf, "gt_max_freq_mhz", &max_freq_mhz)) - return false; + if (!read_sysfs_drm_device_file_uint64(perf, "gt_max_freq_mhz", &max_freq_mhz)) + return false; + } else { + min_freq_mhz = 300; + max_freq_mhz = 1000; + } memset(&perf->sys_vars, 0, sizeof(perf->sys_vars)); perf->sys_vars.gt_min_freq = min_freq_mhz * 1000000; @@ -815,130 +476,242 @@ get_register_queries_function(const struct gen_device_info *devinfo) return NULL; } -static inline void -add_stat_reg(struct gen_perf_query_info *query, uint32_t reg, - uint32_t numerator, uint32_t denominator, - const char *name, const char *description) +static int +gen_perf_compare_counter_names(const void *v1, const void *v2) { - struct gen_perf_query_counter *counter; - - assert(query->n_counters < query->max_counters); + const struct gen_perf_query_counter *c1 = v1; + const struct gen_perf_query_counter *c2 = v2; - counter = &query->counters[query->n_counters]; - counter->name = name; - counter->desc = description; - counter->type = GEN_PERF_COUNTER_TYPE_RAW; - counter->data_type = GEN_PERF_COUNTER_DATA_TYPE_UINT64; - counter->offset = sizeof(uint64_t) * query->n_counters; - counter->pipeline_stat.reg = reg; - counter->pipeline_stat.numerator = numerator; - counter->pipeline_stat.denominator = denominator; - - query->n_counters++; + return strcmp(c1->name, c2->name); } -static inline void -add_basic_stat_reg(struct gen_perf_query_info *query, - uint32_t reg, const char *name) +static void +sort_query(struct gen_perf_query_info *q) { - add_stat_reg(query, reg, 1, 1, name, name); + qsort(q->counters, q->n_counters, sizeof(q->counters[0]), + gen_perf_compare_counter_names); } static void load_pipeline_statistic_metrics(struct gen_perf_config *perf_cfg, - const struct gen_device_info *devinfo) + const struct gen_device_info *devinfo) { struct gen_perf_query_info *query = - append_query_info(perf_cfg, MAX_STAT_COUNTERS); + gen_perf_append_query_info(perf_cfg, MAX_STAT_COUNTERS); query->kind = GEN_PERF_QUERY_TYPE_PIPELINE; query->name = "Pipeline Statistics Registers"; - add_basic_stat_reg(query, IA_VERTICES_COUNT, - "N vertices submitted"); - add_basic_stat_reg(query, IA_PRIMITIVES_COUNT, - "N primitives submitted"); - add_basic_stat_reg(query, VS_INVOCATION_COUNT, - "N vertex shader invocations"); + gen_perf_query_add_basic_stat_reg(query, IA_VERTICES_COUNT, + "N vertices submitted"); + gen_perf_query_add_basic_stat_reg(query, IA_PRIMITIVES_COUNT, + "N primitives submitted"); + gen_perf_query_add_basic_stat_reg(query, VS_INVOCATION_COUNT, + "N vertex shader invocations"); if (devinfo->gen == 6) { - add_stat_reg(query, GEN6_SO_PRIM_STORAGE_NEEDED, 1, 1, - "SO_PRIM_STORAGE_NEEDED", - "N geometry shader stream-out primitives (total)"); - add_stat_reg(query, GEN6_SO_NUM_PRIMS_WRITTEN, 1, 1, - "SO_NUM_PRIMS_WRITTEN", - "N geometry shader stream-out primitives (written)"); + gen_perf_query_add_stat_reg(query, GEN6_SO_PRIM_STORAGE_NEEDED, 1, 1, + "SO_PRIM_STORAGE_NEEDED", + "N geometry shader stream-out primitives (total)"); + gen_perf_query_add_stat_reg(query, GEN6_SO_NUM_PRIMS_WRITTEN, 1, 1, + "SO_NUM_PRIMS_WRITTEN", + "N geometry shader stream-out primitives (written)"); } else { - add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(0), 1, 1, - "SO_PRIM_STORAGE_NEEDED (Stream 0)", - "N stream-out (stream 0) primitives (total)"); - add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(1), 1, 1, - "SO_PRIM_STORAGE_NEEDED (Stream 1)", - "N stream-out (stream 1) primitives (total)"); - add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(2), 1, 1, - "SO_PRIM_STORAGE_NEEDED (Stream 2)", - "N stream-out (stream 2) primitives (total)"); - add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(3), 1, 1, - "SO_PRIM_STORAGE_NEEDED (Stream 3)", - "N stream-out (stream 3) primitives (total)"); - add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(0), 1, 1, - "SO_NUM_PRIMS_WRITTEN (Stream 0)", - "N stream-out (stream 0) primitives (written)"); - add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(1), 1, 1, - "SO_NUM_PRIMS_WRITTEN (Stream 1)", - "N stream-out (stream 1) primitives (written)"); - add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(2), 1, 1, - "SO_NUM_PRIMS_WRITTEN (Stream 2)", - "N stream-out (stream 2) primitives (written)"); - add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(3), 1, 1, - "SO_NUM_PRIMS_WRITTEN (Stream 3)", - "N stream-out (stream 3) primitives (written)"); - } - - add_basic_stat_reg(query, HS_INVOCATION_COUNT, - "N TCS shader invocations"); - add_basic_stat_reg(query, DS_INVOCATION_COUNT, - "N TES shader invocations"); - - add_basic_stat_reg(query, GS_INVOCATION_COUNT, - "N geometry shader invocations"); - add_basic_stat_reg(query, GS_PRIMITIVES_COUNT, - "N geometry shader primitives emitted"); - - add_basic_stat_reg(query, CL_INVOCATION_COUNT, - "N primitives entering clipping"); - add_basic_stat_reg(query, CL_PRIMITIVES_COUNT, - "N primitives leaving clipping"); + gen_perf_query_add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(0), 1, 1, + "SO_PRIM_STORAGE_NEEDED (Stream 0)", + "N stream-out (stream 0) primitives (total)"); + gen_perf_query_add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(1), 1, 1, + "SO_PRIM_STORAGE_NEEDED (Stream 1)", + "N stream-out (stream 1) primitives (total)"); + gen_perf_query_add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(2), 1, 1, + "SO_PRIM_STORAGE_NEEDED (Stream 2)", + "N stream-out (stream 2) primitives (total)"); + gen_perf_query_add_stat_reg(query, GEN7_SO_PRIM_STORAGE_NEEDED(3), 1, 1, + "SO_PRIM_STORAGE_NEEDED (Stream 3)", + "N stream-out (stream 3) primitives (total)"); + gen_perf_query_add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(0), 1, 1, + "SO_NUM_PRIMS_WRITTEN (Stream 0)", + "N stream-out (stream 0) primitives (written)"); + gen_perf_query_add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(1), 1, 1, + "SO_NUM_PRIMS_WRITTEN (Stream 1)", + "N stream-out (stream 1) primitives (written)"); + gen_perf_query_add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(2), 1, 1, + "SO_NUM_PRIMS_WRITTEN (Stream 2)", + "N stream-out (stream 2) primitives (written)"); + gen_perf_query_add_stat_reg(query, GEN7_SO_NUM_PRIMS_WRITTEN(3), 1, 1, + "SO_NUM_PRIMS_WRITTEN (Stream 3)", + "N stream-out (stream 3) primitives (written)"); + } + + gen_perf_query_add_basic_stat_reg(query, HS_INVOCATION_COUNT, + "N TCS shader invocations"); + gen_perf_query_add_basic_stat_reg(query, DS_INVOCATION_COUNT, + "N TES shader invocations"); + + gen_perf_query_add_basic_stat_reg(query, GS_INVOCATION_COUNT, + "N geometry shader invocations"); + gen_perf_query_add_basic_stat_reg(query, GS_PRIMITIVES_COUNT, + "N geometry shader primitives emitted"); + + gen_perf_query_add_basic_stat_reg(query, CL_INVOCATION_COUNT, + "N primitives entering clipping"); + gen_perf_query_add_basic_stat_reg(query, CL_PRIMITIVES_COUNT, + "N primitives leaving clipping"); if (devinfo->is_haswell || devinfo->gen == 8) { - add_stat_reg(query, PS_INVOCATION_COUNT, 1, 4, - "N fragment shader invocations", - "N fragment shader invocations"); + gen_perf_query_add_stat_reg(query, PS_INVOCATION_COUNT, 1, 4, + "N fragment shader invocations", + "N fragment shader invocations"); } else { - add_basic_stat_reg(query, PS_INVOCATION_COUNT, - "N fragment shader invocations"); + gen_perf_query_add_basic_stat_reg(query, PS_INVOCATION_COUNT, + "N fragment shader invocations"); } - add_basic_stat_reg(query, PS_DEPTH_COUNT, - "N z-pass fragments"); + gen_perf_query_add_basic_stat_reg(query, PS_DEPTH_COUNT, + "N z-pass fragments"); if (devinfo->gen >= 7) { - add_basic_stat_reg(query, CS_INVOCATION_COUNT, - "N compute shader invocations"); + gen_perf_query_add_basic_stat_reg(query, CS_INVOCATION_COUNT, + "N compute shader invocations"); } query->data_size = sizeof(uint64_t) * query->n_counters; + + sort_query(query); +} + +static int +i915_perf_version(int drm_fd) +{ + int tmp; + drm_i915_getparam_t gp = { + .param = I915_PARAM_PERF_REVISION, + .value = &tmp, + }; + + int ret = gen_ioctl(drm_fd, DRM_IOCTL_I915_GETPARAM, &gp); + + /* Return 0 if this getparam is not supported, the first version supported + * is 1. + */ + return ret < 0 ? 0 : tmp; +} + +static void +i915_get_sseu(int drm_fd, struct drm_i915_gem_context_param_sseu *sseu) +{ + struct drm_i915_gem_context_param arg = { + .param = I915_CONTEXT_PARAM_SSEU, + .size = sizeof(*sseu), + .value = to_user_pointer(sseu) + }; + + gen_ioctl(drm_fd, DRM_IOCTL_I915_GEM_CONTEXT_GETPARAM, &arg); +} + +static inline int +compare_str_or_null(const char *s1, const char *s2) +{ + if (s1 == NULL && s2 == NULL) + return 0; + if (s1 == NULL) + return -1; + if (s2 == NULL) + return 1; + + return strcmp(s1, s2); +} + +static int +compare_counter_categories_and_names(const void *_c1, const void *_c2) +{ + const struct gen_perf_query_counter_info *c1 = (const struct gen_perf_query_counter_info *)_c1; + const struct gen_perf_query_counter_info *c2 = (const struct gen_perf_query_counter_info *)_c2; + + /* pipeline counters don't have an assigned category */ + int r = compare_str_or_null(c1->counter->category, c2->counter->category); + if (r) + return r; + + return strcmp(c1->counter->name, c2->counter->name); +} + +static void +build_unique_counter_list(struct gen_perf_config *perf) +{ + assert(perf->n_queries < 64); + + size_t max_counters = 0; + + for (int q = 0; q < perf->n_queries; q++) + max_counters += perf->queries[q].n_counters; + + /* + * Allocate big enough array to hold maximum possible number of counters. + * We can't alloc it small and realloc when needed because the hash table + * below contains pointers to this array. + */ + struct gen_perf_query_counter_info *counter_infos = + ralloc_array_size(perf, sizeof(counter_infos[0]), max_counters); + + perf->n_counters = 0; + + struct hash_table *counters_table = + _mesa_hash_table_create(perf, + _mesa_hash_string, + _mesa_key_string_equal); + struct hash_entry *entry; + for (int q = 0; q < perf->n_queries ; q++) { + struct gen_perf_query_info *query = &perf->queries[q]; + + for (int c = 0; c < query->n_counters; c++) { + struct gen_perf_query_counter *counter; + struct gen_perf_query_counter_info *counter_info; + + counter = &query->counters[c]; + entry = _mesa_hash_table_search(counters_table, counter->symbol_name); + + if (entry) { + counter_info = entry->data; + counter_info->query_mask |= BITFIELD64_BIT(q); + continue; + } + assert(perf->n_counters < max_counters); + + counter_info = &counter_infos[perf->n_counters++]; + counter_info->counter = counter; + counter_info->query_mask = BITFIELD64_BIT(q); + + counter_info->location.group_idx = q; + counter_info->location.counter_idx = c; + + _mesa_hash_table_insert(counters_table, counter->symbol_name, counter_info); + } + } + + _mesa_hash_table_destroy(counters_table, NULL); + + /* Now we can realloc counter_infos array because hash table doesn't exist. */ + perf->counter_infos = reralloc_array_size(perf, counter_infos, + sizeof(counter_infos[0]), perf->n_counters); + + qsort(perf->counter_infos, perf->n_counters, sizeof(perf->counter_infos[0]), + compare_counter_categories_and_names); } static bool -load_oa_metrics(struct gen_perf_config *perf, int fd, - const struct gen_device_info *devinfo) +oa_metrics_available(struct gen_perf_config *perf, int fd, + const struct gen_device_info *devinfo) { perf_register_oa_queries_t oa_register = get_register_queries_function(devinfo); bool i915_perf_oa_available = false; struct stat sb; perf->i915_query_supported = i915_query_perf_config_supported(perf, fd); + perf->i915_perf_version = i915_perf_version(fd); + + /* Record the default SSEU configuration. */ + i915_get_sseu(fd, &perf->sseu); /* The existence of this sysctl parameter implies the kernel supports * the i915 perf interface. @@ -958,16 +731,26 @@ load_oa_metrics(struct gen_perf_config *perf, int fd, if (paranoid == 0 || geteuid() == 0) i915_perf_oa_available = true; } + + perf->platform_supported = oa_register != NULL; } - if (!i915_perf_oa_available || - !oa_register || - !get_sysfs_dev_dir(perf, fd) || - !init_oa_sys_vars(perf, devinfo)) - return false; + return i915_perf_oa_available && + oa_register && + get_sysfs_dev_dir(perf, fd) && + init_oa_sys_vars(perf, devinfo); +} + +static void +load_oa_metrics(struct gen_perf_config *perf, int fd, + const struct gen_device_info *devinfo) +{ + int existing_queries = perf->n_queries; + + perf_register_oa_queries_t oa_register = get_register_queries_function(devinfo); perf->oa_metrics_table = - _mesa_hash_table_create(perf, _mesa_key_hash_string, + _mesa_hash_table_create(perf, _mesa_hash_string, _mesa_key_string_equal); /* Index all the metric sets mesa knows about before looking to see what @@ -975,13 +758,18 @@ load_oa_metrics(struct gen_perf_config *perf, int fd, */ oa_register(perf); - if (likely((INTEL_DEBUG & DEBUG_NO_OACONFIG) == 0) && - kernel_has_dynamic_config_support(perf, fd)) - init_oa_configs(perf, fd); - else - enumerate_sysfs_metrics(perf); + if (likely(!(INTEL_DEBUG & DEBUG_NO_OACONFIG))) { + if (kernel_has_dynamic_config_support(perf, fd)) + init_oa_configs(perf, fd, devinfo); + else + enumerate_sysfs_metrics(perf, devinfo); + } else { + add_all_metrics(perf, devinfo); + } - return true; + /* sort counters in each individual group created by this function by name */ + for (int i = existing_queries; i < perf->n_queries; ++i) + sort_query(&perf->queries[i]); } struct gen_perf_registers * @@ -1006,9 +794,9 @@ gen_perf_load_configuration(struct gen_perf_config *perf_cfg, int fd, const char * struct gen_perf_query_register_prog maps exactly to the tuple of * (register offset, register value) returned by the i915. */ - i915_config.flex_regs_ptr = to_user_pointer(config->flex_regs); - i915_config.mux_regs_ptr = to_user_pointer(config->mux_regs); - i915_config.boolean_regs_ptr = to_user_pointer(config->b_counter_regs); + i915_config.flex_regs_ptr = to_const_user_pointer(config->flex_regs); + i915_config.mux_regs_ptr = to_const_user_pointer(config->mux_regs); + i915_config.boolean_regs_ptr = to_const_user_pointer(config->b_counter_regs); if (!i915_query_perf_config_data(perf_cfg, fd, guid, &i915_config)) { ralloc_free(config); return NULL; @@ -1065,6 +853,82 @@ gen_perf_store_configuration(struct gen_perf_config *perf_cfg, int fd, return i915_add_config(perf_cfg, fd, config, generated_guid); } +static uint64_t +get_passes_mask(struct gen_perf_config *perf, + const uint32_t *counter_indices, + uint32_t counter_indices_count) +{ + uint64_t queries_mask = 0; + + assert(perf->n_queries < 64); + + /* Compute the number of passes by going through all counters N times (with + * N the number of queries) to make sure we select the most constraining + * counters first and look at the more flexible ones (that could be + * obtained from multiple queries) later. That way we minimize the number + * of passes required. + */ + for (uint32_t q = 0; q < perf->n_queries; q++) { + for (uint32_t i = 0; i < counter_indices_count; i++) { + assert(counter_indices[i] < perf->n_counters); + + uint32_t idx = counter_indices[i]; + if (__builtin_popcount(perf->counter_infos[idx].query_mask) != (q + 1)) + continue; + + if (queries_mask & perf->counter_infos[idx].query_mask) + continue; + + queries_mask |= BITFIELD64_BIT(ffsll(perf->counter_infos[idx].query_mask) - 1); + } + } + + return queries_mask; +} + +uint32_t +gen_perf_get_n_passes(struct gen_perf_config *perf, + const uint32_t *counter_indices, + uint32_t counter_indices_count, + struct gen_perf_query_info **pass_queries) +{ + uint64_t queries_mask = get_passes_mask(perf, counter_indices, counter_indices_count); + + if (pass_queries) { + uint32_t pass = 0; + for (uint32_t q = 0; q < perf->n_queries; q++) { + if ((1ULL << q) & queries_mask) + pass_queries[pass++] = &perf->queries[q]; + } + } + + return __builtin_popcount(queries_mask); +} + +void +gen_perf_get_counters_passes(struct gen_perf_config *perf, + const uint32_t *counter_indices, + uint32_t counter_indices_count, + struct gen_perf_counter_pass *counter_pass) +{ + uint64_t queries_mask = get_passes_mask(perf, counter_indices, counter_indices_count); + ASSERTED uint32_t n_passes = __builtin_popcount(queries_mask); + + for (uint32_t i = 0; i < counter_indices_count; i++) { + assert(counter_indices[i] < perf->n_counters); + + uint32_t idx = counter_indices[i]; + counter_pass[i].counter = perf->counter_infos[idx].counter; + + uint32_t query_idx = ffsll(perf->counter_infos[idx].query_mask & queries_mask) - 1; + counter_pass[i].query = &perf->queries[query_idx]; + + uint32_t clear_bits = 63 - query_idx; + counter_pass[i].pass = __builtin_popcount((queries_mask << clear_bits) >> clear_bits) - 1; + assert(counter_pass[i].pass < n_passes); + } +} + /* Accumulate 32bits OA counters */ static inline void accumulate_uint32(const uint32_t *report0, @@ -1157,7 +1021,7 @@ gen_perf_query_result_accumulate(struct gen_perf_query_result *result, const uint32_t *start, const uint32_t *end) { - int i, idx = 0; + int i; if (result->hw_id == OA_REPORT_INVALID_CTX_ID && start[2] != OA_REPORT_INVALID_CTX_ID) @@ -1168,27 +1032,43 @@ gen_perf_query_result_accumulate(struct gen_perf_query_result *result, switch (query->oa_format) { case I915_OA_FORMAT_A32u40_A4u32_B8_C8: - accumulate_uint32(start + 1, end + 1, result->accumulator + idx++); /* timestamp */ - accumulate_uint32(start + 3, end + 3, result->accumulator + idx++); /* clock */ + accumulate_uint32(start + 1, end + 1, + result->accumulator + query->gpu_time_offset); /* timestamp */ + accumulate_uint32(start + 3, end + 3, + result->accumulator + query->gpu_clock_offset); /* clock */ /* 32x 40bit A counters... */ - for (i = 0; i < 32; i++) - accumulate_uint40(i, start, end, result->accumulator + idx++); + for (i = 0; i < 32; i++) { + accumulate_uint40(i, start, end, + result->accumulator + query->a_offset + i); + } /* 4x 32bit A counters... */ - for (i = 0; i < 4; i++) - accumulate_uint32(start + 36 + i, end + 36 + i, result->accumulator + idx++); + for (i = 0; i < 4; i++) { + accumulate_uint32(start + 36 + i, end + 36 + i, + result->accumulator + query->a_offset + 32 + i); + } + + /* 8x 32bit B counters */ + for (i = 0; i < 8; i++) { + accumulate_uint32(start + 48 + i, end + 48 + i, + result->accumulator + query->b_offset + i); + } - /* 8x 32bit B counters + 8x 32bit C counters... */ - for (i = 0; i < 16; i++) - accumulate_uint32(start + 48 + i, end + 48 + i, result->accumulator + idx++); + /* 8x 32bit C counters... */ + for (i = 0; i < 8; i++) { + accumulate_uint32(start + 56 + i, end + 56 + i, + result->accumulator + query->c_offset + i); + } break; case I915_OA_FORMAT_A45_B8_C8: accumulate_uint32(start + 1, end + 1, result->accumulator); /* timestamp */ - for (i = 0; i < 61; i++) - accumulate_uint32(start + 3 + i, end + 3 + i, result->accumulator + 1 + i); + for (i = 0; i < 61; i++) { + accumulate_uint32(start + 3 + i, end + 3 + i, + result->accumulator + query->a_offset + i); + } break; default: @@ -1204,1464 +1084,36 @@ gen_perf_query_result_clear(struct gen_perf_query_result *result) result->hw_id = OA_REPORT_INVALID_CTX_ID; /* invalid */ } -static void -register_mdapi_statistic_query(struct gen_perf_config *perf_cfg, - const struct gen_device_info *devinfo) +static int +gen_perf_compare_query_names(const void *v1, const void *v2) { - if (!(devinfo->gen >= 7 && devinfo->gen <= 11)) - return; - - struct gen_perf_query_info *query = - append_query_info(perf_cfg, MAX_STAT_COUNTERS); - - query->kind = GEN_PERF_QUERY_TYPE_PIPELINE; - query->name = "Intel_Raw_Pipeline_Statistics_Query"; - - /* The order has to match mdapi_pipeline_metrics. */ - add_basic_stat_reg(query, IA_VERTICES_COUNT, - "N vertices submitted"); - add_basic_stat_reg(query, IA_PRIMITIVES_COUNT, - "N primitives submitted"); - add_basic_stat_reg(query, VS_INVOCATION_COUNT, - "N vertex shader invocations"); - add_basic_stat_reg(query, GS_INVOCATION_COUNT, - "N geometry shader invocations"); - add_basic_stat_reg(query, GS_PRIMITIVES_COUNT, - "N geometry shader primitives emitted"); - add_basic_stat_reg(query, CL_INVOCATION_COUNT, - "N primitives entering clipping"); - add_basic_stat_reg(query, CL_PRIMITIVES_COUNT, - "N primitives leaving clipping"); - if (devinfo->is_haswell || devinfo->gen == 8) { - add_stat_reg(query, PS_INVOCATION_COUNT, 1, 4, - "N fragment shader invocations", - "N fragment shader invocations"); - } else { - add_basic_stat_reg(query, PS_INVOCATION_COUNT, - "N fragment shader invocations"); - } - add_basic_stat_reg(query, HS_INVOCATION_COUNT, - "N TCS shader invocations"); - add_basic_stat_reg(query, DS_INVOCATION_COUNT, - "N TES shader invocations"); - if (devinfo->gen >= 7) { - add_basic_stat_reg(query, CS_INVOCATION_COUNT, - "N compute shader invocations"); - } - - if (devinfo->gen >= 10) { - /* Reuse existing CS invocation register until we can expose this new - * one. - */ - add_basic_stat_reg(query, CS_INVOCATION_COUNT, - "Reserved1"); - } + const struct gen_perf_query_info *q1 = v1; + const struct gen_perf_query_info *q2 = v2; - query->data_size = sizeof(uint64_t) * query->n_counters; + return strcmp(q1->name, q2->name); } -static void -fill_mdapi_perf_query_counter(struct gen_perf_query_info *query, - const char *name, - uint32_t data_offset, - uint32_t data_size, - enum gen_perf_counter_data_type data_type) +void +gen_perf_init_metrics(struct gen_perf_config *perf_cfg, + const struct gen_device_info *devinfo, + int drm_fd, + bool include_pipeline_statistics) { - struct gen_perf_query_counter *counter = &query->counters[query->n_counters]; - - assert(query->n_counters <= query->max_counters); - - counter->name = name; - counter->desc = "Raw counter value"; - counter->type = GEN_PERF_COUNTER_TYPE_RAW; - counter->data_type = data_type; - counter->offset = data_offset; - - query->n_counters++; - - assert(counter->offset + gen_perf_query_counter_get_size(counter) <= query->data_size); -} - -#define MDAPI_QUERY_ADD_COUNTER(query, struct_name, field_name, type_name) \ - fill_mdapi_perf_query_counter(query, #field_name, \ - (uint8_t *) &struct_name.field_name - \ - (uint8_t *) &struct_name, \ - sizeof(struct_name.field_name), \ - GEN_PERF_COUNTER_DATA_TYPE_##type_name) -#define MDAPI_QUERY_ADD_ARRAY_COUNTER(ctx, query, struct_name, field_name, idx, type_name) \ - fill_mdapi_perf_query_counter(query, \ - ralloc_asprintf(ctx, "%s%i", #field_name, idx), \ - (uint8_t *) &struct_name.field_name[idx] - \ - (uint8_t *) &struct_name, \ - sizeof(struct_name.field_name[0]), \ - GEN_PERF_COUNTER_DATA_TYPE_##type_name) + if (include_pipeline_statistics) { + load_pipeline_statistic_metrics(perf_cfg, devinfo); + gen_perf_register_mdapi_statistic_query(perf_cfg, devinfo); + } -static void -register_mdapi_oa_query(const struct gen_device_info *devinfo, - struct gen_perf_config *perf) -{ - struct gen_perf_query_info *query = NULL; + bool oa_metrics = oa_metrics_available(perf_cfg, drm_fd, devinfo); + if (oa_metrics) + load_oa_metrics(perf_cfg, drm_fd, devinfo); - /* MDAPI requires different structures for pretty much every generation - * (right now we have definitions for gen 7 to 11). - */ - if (!(devinfo->gen >= 7 && devinfo->gen <= 11)) - return; + /* sort query groups by name */ + qsort(perf_cfg->queries, perf_cfg->n_queries, + sizeof(perf_cfg->queries[0]), gen_perf_compare_query_names); - switch (devinfo->gen) { - case 7: { - query = append_query_info(perf, 1 + 45 + 16 + 7); - query->oa_format = I915_OA_FORMAT_A45_B8_C8; + build_unique_counter_list(perf_cfg); - struct gen7_mdapi_metrics metric_data; - query->data_size = sizeof(metric_data); - - MDAPI_QUERY_ADD_COUNTER(query, metric_data, TotalTime, UINT64); - for (int i = 0; i < ARRAY_SIZE(metric_data.ACounters); i++) { - MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query, - metric_data, ACounters, i, UINT64); - } - for (int i = 0; i < ARRAY_SIZE(metric_data.NOACounters); i++) { - MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query, - metric_data, NOACounters, i, UINT64); - } - MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter1, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter2, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, SplitOccured, BOOL32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequencyChanged, BOOL32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequency, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportId, UINT32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportsCount, UINT32); - break; - } - case 8: { - query = append_query_info(perf, 2 + 36 + 16 + 16); - query->oa_format = I915_OA_FORMAT_A32u40_A4u32_B8_C8; - - struct gen8_mdapi_metrics metric_data; - query->data_size = sizeof(metric_data); - - MDAPI_QUERY_ADD_COUNTER(query, metric_data, TotalTime, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, GPUTicks, UINT64); - for (int i = 0; i < ARRAY_SIZE(metric_data.OaCntr); i++) { - MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query, - metric_data, OaCntr, i, UINT64); - } - for (int i = 0; i < ARRAY_SIZE(metric_data.NoaCntr); i++) { - MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query, - metric_data, NoaCntr, i, UINT64); - } - MDAPI_QUERY_ADD_COUNTER(query, metric_data, BeginTimestamp, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved1, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved2, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved3, UINT32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, OverrunOccured, BOOL32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, MarkerUser, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, MarkerDriver, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, SliceFrequency, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, UnsliceFrequency, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter1, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter2, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, SplitOccured, BOOL32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequencyChanged, BOOL32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequency, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportId, UINT32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportsCount, UINT32); - break; - } - case 9: - case 10: - case 11: { - query = append_query_info(perf, 2 + 36 + 16 + 16 + 16 + 2); - query->oa_format = I915_OA_FORMAT_A32u40_A4u32_B8_C8; - - struct gen9_mdapi_metrics metric_data; - query->data_size = sizeof(metric_data); - - MDAPI_QUERY_ADD_COUNTER(query, metric_data, TotalTime, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, GPUTicks, UINT64); - for (int i = 0; i < ARRAY_SIZE(metric_data.OaCntr); i++) { - MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query, - metric_data, OaCntr, i, UINT64); - } - for (int i = 0; i < ARRAY_SIZE(metric_data.NoaCntr); i++) { - MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query, - metric_data, NoaCntr, i, UINT64); - } - MDAPI_QUERY_ADD_COUNTER(query, metric_data, BeginTimestamp, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved1, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved2, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved3, UINT32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, OverrunOccured, BOOL32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, MarkerUser, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, MarkerDriver, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, SliceFrequency, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, UnsliceFrequency, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter1, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, PerfCounter2, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, SplitOccured, BOOL32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequencyChanged, BOOL32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, CoreFrequency, UINT64); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportId, UINT32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, ReportsCount, UINT32); - for (int i = 0; i < ARRAY_SIZE(metric_data.UserCntr); i++) { - MDAPI_QUERY_ADD_ARRAY_COUNTER(perf->queries, query, - metric_data, UserCntr, i, UINT64); - } - MDAPI_QUERY_ADD_COUNTER(query, metric_data, UserCntrCfgId, UINT32); - MDAPI_QUERY_ADD_COUNTER(query, metric_data, Reserved4, UINT32); - break; - } - default: - unreachable("Unsupported gen"); - break; - } - - query->kind = GEN_PERF_QUERY_TYPE_RAW; - query->name = "Intel_Raw_Hardware_Counters_Set_0_Query"; - query->guid = GEN_PERF_QUERY_GUID_MDAPI; - - { - /* Accumulation buffer offsets copied from an actual query... */ - const struct gen_perf_query_info *copy_query = - &perf->queries[0]; - - query->gpu_time_offset = copy_query->gpu_time_offset; - query->gpu_clock_offset = copy_query->gpu_clock_offset; - query->a_offset = copy_query->a_offset; - query->b_offset = copy_query->b_offset; - query->c_offset = copy_query->c_offset; - } -} - -static uint64_t -get_metric_id(struct gen_perf_config *perf, - const struct gen_perf_query_info *query) -{ - /* These queries are know not to ever change, their config ID has been - * loaded upon the first query creation. No need to look them up again. - */ - if (query->kind == GEN_PERF_QUERY_TYPE_OA) - return query->oa_metrics_set_id; - - assert(query->kind == GEN_PERF_QUERY_TYPE_RAW); - - /* Raw queries can be reprogrammed up by an external application/library. - * When a raw query is used for the first time it's id is set to a value != - * 0. When it stops being used the id returns to 0. No need to reload the - * ID when it's already loaded. - */ - if (query->oa_metrics_set_id != 0) { - DBG("Raw query '%s' guid=%s using cached ID: %"PRIu64"\n", - query->name, query->guid, query->oa_metrics_set_id); - return query->oa_metrics_set_id; - } - - struct gen_perf_query_info *raw_query = (struct gen_perf_query_info *)query; - if (!gen_perf_load_metric_id(perf, query->guid, - &raw_query->oa_metrics_set_id)) { - DBG("Unable to read query guid=%s ID, falling back to test config\n", query->guid); - raw_query->oa_metrics_set_id = 1ULL; - } else { - DBG("Raw query '%s'guid=%s loaded ID: %"PRIu64"\n", - query->name, query->guid, query->oa_metrics_set_id); - } - return query->oa_metrics_set_id; -} - -static struct oa_sample_buf * -get_free_sample_buf(struct gen_perf_context *perf_ctx) -{ - struct exec_node *node = exec_list_pop_head(&perf_ctx->free_sample_buffers); - struct oa_sample_buf *buf; - - if (node) - buf = exec_node_data(struct oa_sample_buf, node, link); - else { - buf = ralloc_size(perf_ctx->perf, sizeof(*buf)); - - exec_node_init(&buf->link); - buf->refcount = 0; - } - buf->len = 0; - - return buf; -} - -static void -reap_old_sample_buffers(struct gen_perf_context *perf_ctx) -{ - struct exec_node *tail_node = - exec_list_get_tail(&perf_ctx->sample_buffers); - struct oa_sample_buf *tail_buf = - exec_node_data(struct oa_sample_buf, tail_node, link); - - /* Remove all old, unreferenced sample buffers walking forward from - * the head of the list, except always leave at least one node in - * the list so we always have a node to reference when we Begin - * a new query. - */ - foreach_list_typed_safe(struct oa_sample_buf, buf, link, - &perf_ctx->sample_buffers) - { - if (buf->refcount == 0 && buf != tail_buf) { - exec_node_remove(&buf->link); - exec_list_push_head(&perf_ctx->free_sample_buffers, &buf->link); - } else - return; - } -} - -static void -free_sample_bufs(struct gen_perf_context *perf_ctx) -{ - foreach_list_typed_safe(struct oa_sample_buf, buf, link, - &perf_ctx->free_sample_buffers) - ralloc_free(buf); - - exec_list_make_empty(&perf_ctx->free_sample_buffers); -} - -/******************************************************************************/ - -/** - * Emit MI_STORE_REGISTER_MEM commands to capture all of the - * pipeline statistics for the performance query object. - */ -static void -snapshot_statistics_registers(struct gen_perf_context *ctx, - struct gen_perf_query_object *obj, - uint32_t offset_in_bytes) -{ - struct gen_perf_config *perf = ctx->perf; - const struct gen_perf_query_info *query = obj->queryinfo; - const int n_counters = query->n_counters; - - for (int i = 0; i < n_counters; i++) { - const struct gen_perf_query_counter *counter = &query->counters[i]; - - assert(counter->data_type == GEN_PERF_COUNTER_DATA_TYPE_UINT64); - - perf->vtbl.store_register_mem(ctx->ctx, obj->pipeline_stats.bo, - counter->pipeline_stat.reg, 8, - offset_in_bytes + i * sizeof(uint64_t)); - } -} - -static void -snapshot_freq_register(struct gen_perf_context *ctx, - struct gen_perf_query_object *query, - uint32_t bo_offset) -{ - struct gen_perf_config *perf = ctx->perf; - const struct gen_device_info *devinfo = ctx->devinfo; - - if (devinfo->gen == 8 && !devinfo->is_cherryview) - perf->vtbl.store_register_mem(ctx->ctx, query->oa.bo, GEN7_RPSTAT1, 4, bo_offset); - else if (devinfo->gen >= 9) - perf->vtbl.store_register_mem(ctx->ctx, query->oa.bo, GEN9_RPSTAT0, 4, bo_offset); -} - -static void -gen_perf_close(struct gen_perf_context *perfquery, - const struct gen_perf_query_info *query) -{ - if (perfquery->oa_stream_fd != -1) { - close(perfquery->oa_stream_fd); - perfquery->oa_stream_fd = -1; - } - if (query->kind == GEN_PERF_QUERY_TYPE_RAW) { - struct gen_perf_query_info *raw_query = - (struct gen_perf_query_info *) query; - raw_query->oa_metrics_set_id = 0; - } -} - -static bool -gen_perf_open(struct gen_perf_context *perf_ctx, - int metrics_set_id, - int report_format, - int period_exponent, - int drm_fd, - uint32_t ctx_id) -{ - uint64_t properties[] = { - /* Single context sampling */ - DRM_I915_PERF_PROP_CTX_HANDLE, ctx_id, - - /* Include OA reports in samples */ - DRM_I915_PERF_PROP_SAMPLE_OA, true, - - /* OA unit configuration */ - DRM_I915_PERF_PROP_OA_METRICS_SET, metrics_set_id, - DRM_I915_PERF_PROP_OA_FORMAT, report_format, - DRM_I915_PERF_PROP_OA_EXPONENT, period_exponent, - }; - struct drm_i915_perf_open_param param = { - .flags = I915_PERF_FLAG_FD_CLOEXEC | - I915_PERF_FLAG_FD_NONBLOCK | - I915_PERF_FLAG_DISABLED, - .num_properties = ARRAY_SIZE(properties) / 2, - .properties_ptr = (uintptr_t) properties, - }; - int fd = gen_ioctl(drm_fd, DRM_IOCTL_I915_PERF_OPEN, ¶m); - if (fd == -1) { - DBG("Error opening gen perf OA stream: %m\n"); - return false; - } - - perf_ctx->oa_stream_fd = fd; - - perf_ctx->current_oa_metrics_set_id = metrics_set_id; - perf_ctx->current_oa_format = report_format; - - return true; -} - -static bool -inc_n_users(struct gen_perf_context *perf_ctx) -{ - if (perf_ctx->n_oa_users == 0 && - gen_ioctl(perf_ctx->oa_stream_fd, I915_PERF_IOCTL_ENABLE, 0) < 0) - { - return false; - } - ++perf_ctx->n_oa_users; - - return true; -} - -static void -dec_n_users(struct gen_perf_context *perf_ctx) -{ - /* Disabling the i915 perf stream will effectively disable the OA - * counters. Note it's important to be sure there are no outstanding - * MI_RPC commands at this point since they could stall the CS - * indefinitely once OACONTROL is disabled. - */ - --perf_ctx->n_oa_users; - if (perf_ctx->n_oa_users == 0 && - gen_ioctl(perf_ctx->oa_stream_fd, I915_PERF_IOCTL_DISABLE, 0) < 0) - { - DBG("WARNING: Error disabling gen perf stream: %m\n"); - } -} - -void -gen_perf_init_metrics(struct gen_perf_config *perf_cfg, - const struct gen_device_info *devinfo, - int drm_fd) -{ - load_pipeline_statistic_metrics(perf_cfg, devinfo); - register_mdapi_statistic_query(perf_cfg, devinfo); - if (load_oa_metrics(perf_cfg, drm_fd, devinfo)) - register_mdapi_oa_query(devinfo, perf_cfg); -} - -void -gen_perf_init_context(struct gen_perf_context *perf_ctx, - struct gen_perf_config *perf_cfg, - void * ctx, /* driver context (eg, brw_context) */ - void * bufmgr, /* eg brw_bufmgr */ - const struct gen_device_info *devinfo, - uint32_t hw_ctx, - int drm_fd) -{ - perf_ctx->perf = perf_cfg; - perf_ctx->ctx = ctx; - perf_ctx->bufmgr = bufmgr; - perf_ctx->drm_fd = drm_fd; - perf_ctx->hw_ctx = hw_ctx; - perf_ctx->devinfo = devinfo; - - perf_ctx->unaccumulated = - ralloc_array(ctx, struct gen_perf_query_object *, 2); - perf_ctx->unaccumulated_elements = 0; - perf_ctx->unaccumulated_array_size = 2; - - exec_list_make_empty(&perf_ctx->sample_buffers); - exec_list_make_empty(&perf_ctx->free_sample_buffers); - - /* It's convenient to guarantee that this linked list of sample - * buffers is never empty so we add an empty head so when we - * Begin an OA query we can always take a reference on a buffer - * in this list. - */ - struct oa_sample_buf *buf = get_free_sample_buf(perf_ctx); - exec_list_push_head(&perf_ctx->sample_buffers, &buf->link); - - perf_ctx->oa_stream_fd = -1; - perf_ctx->next_query_start_report_id = 1000; -} - -/** - * Add a query to the global list of "unaccumulated queries." - * - * Queries are tracked here until all the associated OA reports have - * been accumulated via accumulate_oa_reports() after the end - * MI_REPORT_PERF_COUNT has landed in query->oa.bo. - */ -static void -add_to_unaccumulated_query_list(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *obj) -{ - if (perf_ctx->unaccumulated_elements >= - perf_ctx->unaccumulated_array_size) - { - perf_ctx->unaccumulated_array_size *= 1.5; - perf_ctx->unaccumulated = - reralloc(perf_ctx->ctx, perf_ctx->unaccumulated, - struct gen_perf_query_object *, - perf_ctx->unaccumulated_array_size); - } - - perf_ctx->unaccumulated[perf_ctx->unaccumulated_elements++] = obj; -} - -bool -gen_perf_begin_query(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query) -{ - struct gen_perf_config *perf_cfg = perf_ctx->perf; - const struct gen_perf_query_info *queryinfo = query->queryinfo; - - /* XXX: We have to consider that the command parser unit that parses batch - * buffer commands and is used to capture begin/end counter snapshots isn't - * implicitly synchronized with what's currently running across other GPU - * units (such as the EUs running shaders) that the performance counters are - * associated with. - * - * The intention of performance queries is to measure the work associated - * with commands between the begin/end delimiters and so for that to be the - * case we need to explicitly synchronize the parsing of commands to capture - * Begin/End counter snapshots with what's running across other parts of the - * GPU. - * - * When the command parser reaches a Begin marker it effectively needs to - * drain everything currently running on the GPU until the hardware is idle - * before capturing the first snapshot of counters - otherwise the results - * would also be measuring the effects of earlier commands. - * - * When the command parser reaches an End marker it needs to stall until - * everything currently running on the GPU has finished before capturing the - * end snapshot - otherwise the results won't be a complete representation - * of the work. - * - * To achieve this, we stall the pipeline at pixel scoreboard (prevent any - * additional work to be processed by the pipeline until all pixels of the - * previous draw has be completed). - * - * N.B. The final results are based on deltas of counters between (inside) - * Begin/End markers so even though the total wall clock time of the - * workload is stretched by larger pipeline bubbles the bubbles themselves - * are generally invisible to the query results. Whether that's a good or a - * bad thing depends on the use case. For a lower real-time impact while - * capturing metrics then periodic sampling may be a better choice than - * INTEL_performance_query. - * - * - * This is our Begin synchronization point to drain current work on the - * GPU before we capture our first counter snapshot... - */ - perf_cfg->vtbl.emit_stall_at_pixel_scoreboard(perf_ctx->ctx); - - switch (queryinfo->kind) { - case GEN_PERF_QUERY_TYPE_OA: - case GEN_PERF_QUERY_TYPE_RAW: { - - /* Opening an i915 perf stream implies exclusive access to the OA unit - * which will generate counter reports for a specific counter set with a - * specific layout/format so we can't begin any OA based queries that - * require a different counter set or format unless we get an opportunity - * to close the stream and open a new one... - */ - uint64_t metric_id = get_metric_id(perf_ctx->perf, queryinfo); - - if (perf_ctx->oa_stream_fd != -1 && - perf_ctx->current_oa_metrics_set_id != metric_id) { - - if (perf_ctx->n_oa_users != 0) { - DBG("WARNING: Begin failed already using perf config=%i/%"PRIu64"\n", - perf_ctx->current_oa_metrics_set_id, metric_id); - return false; - } else - gen_perf_close(perf_ctx, queryinfo); - } - - /* If the OA counters aren't already on, enable them. */ - if (perf_ctx->oa_stream_fd == -1) { - const struct gen_device_info *devinfo = perf_ctx->devinfo; - - /* The period_exponent gives a sampling period as follows: - * sample_period = timestamp_period * 2^(period_exponent + 1) - * - * The timestamps increments every 80ns (HSW), ~52ns (GEN9LP) or - * ~83ns (GEN8/9). - * - * The counter overflow period is derived from the EuActive counter - * which reads a counter that increments by the number of clock - * cycles multiplied by the number of EUs. It can be calculated as: - * - * 2^(number of bits in A counter) / (n_eus * max_gen_freq * 2) - * - * (E.g. 40 EUs @ 1GHz = ~53ms) - * - * We select a sampling period inferior to that overflow period to - * ensure we cannot see more than 1 counter overflow, otherwise we - * could loose information. - */ - - int a_counter_in_bits = 32; - if (devinfo->gen >= 8) - a_counter_in_bits = 40; - - uint64_t overflow_period = pow(2, a_counter_in_bits) / (perf_cfg->sys_vars.n_eus * - /* drop 1GHz freq to have units in nanoseconds */ - 2); - - DBG("A counter overflow period: %"PRIu64"ns, %"PRIu64"ms (n_eus=%"PRIu64")\n", - overflow_period, overflow_period / 1000000ul, perf_cfg->sys_vars.n_eus); - - int period_exponent = 0; - uint64_t prev_sample_period, next_sample_period; - for (int e = 0; e < 30; e++) { - prev_sample_period = 1000000000ull * pow(2, e + 1) / devinfo->timestamp_frequency; - next_sample_period = 1000000000ull * pow(2, e + 2) / devinfo->timestamp_frequency; - - /* Take the previous sampling period, lower than the overflow - * period. - */ - if (prev_sample_period < overflow_period && - next_sample_period > overflow_period) - period_exponent = e + 1; - } - - if (period_exponent == 0) { - DBG("WARNING: enable to find a sampling exponent\n"); - return false; - } - - DBG("OA sampling exponent: %i ~= %"PRIu64"ms\n", period_exponent, - prev_sample_period / 1000000ul); - - if (!gen_perf_open(perf_ctx, metric_id, queryinfo->oa_format, - period_exponent, perf_ctx->drm_fd, - perf_ctx->hw_ctx)) - return false; - } else { - assert(perf_ctx->current_oa_metrics_set_id == metric_id && - perf_ctx->current_oa_format == queryinfo->oa_format); - } - - if (!inc_n_users(perf_ctx)) { - DBG("WARNING: Error enabling i915 perf stream: %m\n"); - return false; - } - - if (query->oa.bo) { - perf_cfg->vtbl.bo_unreference(query->oa.bo); - query->oa.bo = NULL; - } - - query->oa.bo = perf_cfg->vtbl.bo_alloc(perf_ctx->bufmgr, - "perf. query OA MI_RPC bo", - MI_RPC_BO_SIZE); -#ifdef DEBUG - /* Pre-filling the BO helps debug whether writes landed. */ - void *map = perf_cfg->vtbl.bo_map(perf_ctx->ctx, query->oa.bo, MAP_WRITE); - memset(map, 0x80, MI_RPC_BO_SIZE); - perf_cfg->vtbl.bo_unmap(query->oa.bo); -#endif - - query->oa.begin_report_id = perf_ctx->next_query_start_report_id; - perf_ctx->next_query_start_report_id += 2; - - /* Take a starting OA counter snapshot. */ - perf_cfg->vtbl.emit_mi_report_perf_count(perf_ctx->ctx, query->oa.bo, 0, - query->oa.begin_report_id); - snapshot_freq_register(perf_ctx, query, MI_FREQ_START_OFFSET_BYTES); - - ++perf_ctx->n_active_oa_queries; - - /* No already-buffered samples can possibly be associated with this query - * so create a marker within the list of sample buffers enabling us to - * easily ignore earlier samples when processing this query after - * completion. - */ - assert(!exec_list_is_empty(&perf_ctx->sample_buffers)); - query->oa.samples_head = exec_list_get_tail(&perf_ctx->sample_buffers); - - struct oa_sample_buf *buf = - exec_node_data(struct oa_sample_buf, query->oa.samples_head, link); - - /* This reference will ensure that future/following sample - * buffers (that may relate to this query) can't be freed until - * this drops to zero. - */ - buf->refcount++; - - gen_perf_query_result_clear(&query->oa.result); - query->oa.results_accumulated = false; - - add_to_unaccumulated_query_list(perf_ctx, query); - break; - } - - case GEN_PERF_QUERY_TYPE_PIPELINE: - if (query->pipeline_stats.bo) { - perf_cfg->vtbl.bo_unreference(query->pipeline_stats.bo); - query->pipeline_stats.bo = NULL; - } - - query->pipeline_stats.bo = - perf_cfg->vtbl.bo_alloc(perf_ctx->bufmgr, - "perf. query pipeline stats bo", - STATS_BO_SIZE); - - /* Take starting snapshots. */ - snapshot_statistics_registers(perf_ctx, query, 0); - - ++perf_ctx->n_active_pipeline_stats_queries; - break; - - default: - unreachable("Unknown query type"); - break; - } - - return true; -} - -void -gen_perf_end_query(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query) -{ - struct gen_perf_config *perf_cfg = perf_ctx->perf; - - /* Ensure that the work associated with the queried commands will have - * finished before taking our query end counter readings. - * - * For more details see comment in brw_begin_perf_query for - * corresponding flush. - */ - perf_cfg->vtbl.emit_stall_at_pixel_scoreboard(perf_ctx->ctx); - - switch (query->queryinfo->kind) { - case GEN_PERF_QUERY_TYPE_OA: - case GEN_PERF_QUERY_TYPE_RAW: - - /* NB: It's possible that the query will have already been marked - * as 'accumulated' if an error was seen while reading samples - * from perf. In this case we mustn't try and emit a closing - * MI_RPC command in case the OA unit has already been disabled - */ - if (!query->oa.results_accumulated) { - /* Take an ending OA counter snapshot. */ - snapshot_freq_register(perf_ctx, query, MI_FREQ_END_OFFSET_BYTES); - perf_cfg->vtbl.emit_mi_report_perf_count(perf_ctx->ctx, query->oa.bo, - MI_RPC_BO_END_OFFSET_BYTES, - query->oa.begin_report_id + 1); - } - - --perf_ctx->n_active_oa_queries; - - /* NB: even though the query has now ended, it can't be accumulated - * until the end MI_REPORT_PERF_COUNT snapshot has been written - * to query->oa.bo - */ - break; - - case GEN_PERF_QUERY_TYPE_PIPELINE: - snapshot_statistics_registers(perf_ctx, query, - STATS_BO_END_OFFSET_BYTES); - --perf_ctx->n_active_pipeline_stats_queries; - break; - - default: - unreachable("Unknown query type"); - break; - } -} - -enum OaReadStatus { - OA_READ_STATUS_ERROR, - OA_READ_STATUS_UNFINISHED, - OA_READ_STATUS_FINISHED, -}; - -static enum OaReadStatus -read_oa_samples_until(struct gen_perf_context *perf_ctx, - uint32_t start_timestamp, - uint32_t end_timestamp) -{ - struct exec_node *tail_node = - exec_list_get_tail(&perf_ctx->sample_buffers); - struct oa_sample_buf *tail_buf = - exec_node_data(struct oa_sample_buf, tail_node, link); - uint32_t last_timestamp = - tail_buf->len == 0 ? start_timestamp : tail_buf->last_timestamp; - - while (1) { - struct oa_sample_buf *buf = get_free_sample_buf(perf_ctx); - uint32_t offset; - int len; - - while ((len = read(perf_ctx->oa_stream_fd, buf->buf, - sizeof(buf->buf))) < 0 && errno == EINTR) - ; - - if (len <= 0) { - exec_list_push_tail(&perf_ctx->free_sample_buffers, &buf->link); - - if (len < 0) { - if (errno == EAGAIN) { - return ((last_timestamp - start_timestamp) < INT32_MAX && - (last_timestamp - start_timestamp) >= - (end_timestamp - start_timestamp)) ? - OA_READ_STATUS_FINISHED : - OA_READ_STATUS_UNFINISHED; - } else { - DBG("Error reading i915 perf samples: %m\n"); - } - } else - DBG("Spurious EOF reading i915 perf samples\n"); - - return OA_READ_STATUS_ERROR; - } - - buf->len = len; - exec_list_push_tail(&perf_ctx->sample_buffers, &buf->link); - - /* Go through the reports and update the last timestamp. */ - offset = 0; - while (offset < buf->len) { - const struct drm_i915_perf_record_header *header = - (const struct drm_i915_perf_record_header *) &buf->buf[offset]; - uint32_t *report = (uint32_t *) (header + 1); - - if (header->type == DRM_I915_PERF_RECORD_SAMPLE) - last_timestamp = report[1]; - - offset += header->size; - } - - buf->last_timestamp = last_timestamp; - } - - unreachable("not reached"); - return OA_READ_STATUS_ERROR; -} - -/** - * Try to read all the reports until either the delimiting timestamp - * or an error arises. - */ -static bool -read_oa_samples_for_query(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query, - void *current_batch) -{ - uint32_t *start; - uint32_t *last; - uint32_t *end; - struct gen_perf_config *perf_cfg = perf_ctx->perf; - - /* We need the MI_REPORT_PERF_COUNT to land before we can start - * accumulate. */ - assert(!perf_cfg->vtbl.batch_references(current_batch, query->oa.bo) && - !perf_cfg->vtbl.bo_busy(query->oa.bo)); - - /* Map the BO once here and let accumulate_oa_reports() unmap - * it. */ - if (query->oa.map == NULL) - query->oa.map = perf_cfg->vtbl.bo_map(perf_ctx->ctx, query->oa.bo, MAP_READ); - - start = last = query->oa.map; - end = query->oa.map + MI_RPC_BO_END_OFFSET_BYTES; - - if (start[0] != query->oa.begin_report_id) { - DBG("Spurious start report id=%"PRIu32"\n", start[0]); - return true; - } - if (end[0] != (query->oa.begin_report_id + 1)) { - DBG("Spurious end report id=%"PRIu32"\n", end[0]); - return true; - } - - /* Read the reports until the end timestamp. */ - switch (read_oa_samples_until(perf_ctx, start[1], end[1])) { - case OA_READ_STATUS_ERROR: - /* Fallthrough and let accumulate_oa_reports() deal with the - * error. */ - case OA_READ_STATUS_FINISHED: - return true; - case OA_READ_STATUS_UNFINISHED: - return false; - } - - unreachable("invalid read status"); - return false; -} - -void -gen_perf_wait_query(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query, - void *current_batch) -{ - struct gen_perf_config *perf_cfg = perf_ctx->perf; - struct brw_bo *bo = NULL; - - switch (query->queryinfo->kind) { - case GEN_PERF_QUERY_TYPE_OA: - case GEN_PERF_QUERY_TYPE_RAW: - bo = query->oa.bo; - break; - - case GEN_PERF_QUERY_TYPE_PIPELINE: - bo = query->pipeline_stats.bo; - break; - - default: - unreachable("Unknown query type"); - break; - } - - if (bo == NULL) - return; - - /* If the current batch references our results bo then we need to - * flush first... - */ - if (perf_cfg->vtbl.batch_references(current_batch, bo)) - perf_cfg->vtbl.batchbuffer_flush(perf_ctx->ctx, __FILE__, __LINE__); - - perf_cfg->vtbl.bo_wait_rendering(bo); - - /* Due to a race condition between the OA unit signaling report - * availability and the report actually being written into memory, - * we need to wait for all the reports to come in before we can - * read them. - */ - if (query->queryinfo->kind == GEN_PERF_QUERY_TYPE_OA || - query->queryinfo->kind == GEN_PERF_QUERY_TYPE_RAW) { - while (!read_oa_samples_for_query(perf_ctx, query, current_batch)) - ; - } -} - -bool -gen_perf_is_query_ready(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query, - void *current_batch) -{ - struct gen_perf_config *perf_cfg = perf_ctx->perf; - - switch (query->queryinfo->kind) { - case GEN_PERF_QUERY_TYPE_OA: - case GEN_PERF_QUERY_TYPE_RAW: - return (query->oa.results_accumulated || - (query->oa.bo && - !perf_cfg->vtbl.batch_references(current_batch, query->oa.bo) && - !perf_cfg->vtbl.bo_busy(query->oa.bo) && - read_oa_samples_for_query(perf_ctx, query, current_batch))); - case GEN_PERF_QUERY_TYPE_PIPELINE: - return (query->pipeline_stats.bo && - !perf_cfg->vtbl.batch_references(current_batch, query->pipeline_stats.bo) && - !perf_cfg->vtbl.bo_busy(query->pipeline_stats.bo)); - - default: - unreachable("Unknown query type"); - break; - } - - return false; -} - -/** - * Remove a query from the global list of unaccumulated queries once - * after successfully accumulating the OA reports associated with the - * query in accumulate_oa_reports() or when discarding unwanted query - * results. - */ -static void -drop_from_unaccumulated_query_list(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query) -{ - for (int i = 0; i < perf_ctx->unaccumulated_elements; i++) { - if (perf_ctx->unaccumulated[i] == query) { - int last_elt = --perf_ctx->unaccumulated_elements; - - if (i == last_elt) - perf_ctx->unaccumulated[i] = NULL; - else { - perf_ctx->unaccumulated[i] = - perf_ctx->unaccumulated[last_elt]; - } - - break; - } - } - - /* Drop our samples_head reference so that associated periodic - * sample data buffers can potentially be reaped if they aren't - * referenced by any other queries... - */ - - struct oa_sample_buf *buf = - exec_node_data(struct oa_sample_buf, query->oa.samples_head, link); - - assert(buf->refcount > 0); - buf->refcount--; - - query->oa.samples_head = NULL; - - reap_old_sample_buffers(perf_ctx); -} - -/* In general if we see anything spurious while accumulating results, - * we don't try and continue accumulating the current query, hoping - * for the best, we scrap anything outstanding, and then hope for the - * best with new queries. - */ -static void -discard_all_queries(struct gen_perf_context *perf_ctx) -{ - while (perf_ctx->unaccumulated_elements) { - struct gen_perf_query_object *query = perf_ctx->unaccumulated[0]; - - query->oa.results_accumulated = true; - drop_from_unaccumulated_query_list(perf_ctx, query); - - dec_n_users(perf_ctx); - } -} - -/* Looks for the validity bit of context ID (dword 2) of an OA report. */ -static bool -oa_report_ctx_id_valid(const struct gen_device_info *devinfo, - const uint32_t *report) -{ - assert(devinfo->gen >= 8); - if (devinfo->gen == 8) - return (report[0] & (1 << 25)) != 0; - return (report[0] & (1 << 16)) != 0; -} - -/** - * Accumulate raw OA counter values based on deltas between pairs of - * OA reports. - * - * Accumulation starts from the first report captured via - * MI_REPORT_PERF_COUNT (MI_RPC) by brw_begin_perf_query() until the - * last MI_RPC report requested by brw_end_perf_query(). Between these - * two reports there may also some number of periodically sampled OA - * reports collected via the i915 perf interface - depending on the - * duration of the query. - * - * These periodic snapshots help to ensure we handle counter overflow - * correctly by being frequent enough to ensure we don't miss multiple - * overflows of a counter between snapshots. For Gen8+ the i915 perf - * snapshots provide the extra context-switch reports that let us - * subtract out the progress of counters associated with other - * contexts running on the system. - */ -static void -accumulate_oa_reports(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query) -{ - const struct gen_device_info *devinfo = perf_ctx->devinfo; - uint32_t *start; - uint32_t *last; - uint32_t *end; - struct exec_node *first_samples_node; - bool last_report_ctx_match = true; - int out_duration = 0; - - assert(query->oa.map != NULL); - - start = last = query->oa.map; - end = query->oa.map + MI_RPC_BO_END_OFFSET_BYTES; - - if (start[0] != query->oa.begin_report_id) { - DBG("Spurious start report id=%"PRIu32"\n", start[0]); - goto error; - } - if (end[0] != (query->oa.begin_report_id + 1)) { - DBG("Spurious end report id=%"PRIu32"\n", end[0]); - goto error; - } - - /* On Gen12+ OA reports are sourced from per context counters, so we don't - * ever have to look at the global OA buffer. Yey \o/ - */ - if (perf_ctx->devinfo->gen >= 12) { - last = start; - goto end; - } - - /* See if we have any periodic reports to accumulate too... */ - - /* N.B. The oa.samples_head was set when the query began and - * pointed to the tail of the perf_ctx->sample_buffers list at - * the time the query started. Since the buffer existed before the - * first MI_REPORT_PERF_COUNT command was emitted we therefore know - * that no data in this particular node's buffer can possibly be - * associated with the query - so skip ahead one... - */ - first_samples_node = query->oa.samples_head->next; - - foreach_list_typed_from(struct oa_sample_buf, buf, link, - &perf_ctx->sample_buffers, - first_samples_node) - { - int offset = 0; - - while (offset < buf->len) { - const struct drm_i915_perf_record_header *header = - (const struct drm_i915_perf_record_header *)(buf->buf + offset); - - assert(header->size != 0); - assert(header->size <= buf->len); - - offset += header->size; - - switch (header->type) { - case DRM_I915_PERF_RECORD_SAMPLE: { - uint32_t *report = (uint32_t *)(header + 1); - bool report_ctx_match = true; - bool add = true; - - /* Ignore reports that come before the start marker. - * (Note: takes care to allow overflow of 32bit timestamps) - */ - if (gen_device_info_timebase_scale(devinfo, - report[1] - start[1]) > 5000000000) { - continue; - } - - /* Ignore reports that come after the end marker. - * (Note: takes care to allow overflow of 32bit timestamps) - */ - if (gen_device_info_timebase_scale(devinfo, - report[1] - end[1]) <= 5000000000) { - goto end; - } - - /* For Gen8+ since the counters continue while other - * contexts are running we need to discount any unrelated - * deltas. The hardware automatically generates a report - * on context switch which gives us a new reference point - * to continuing adding deltas from. - * - * For Haswell we can rely on the HW to stop the progress - * of OA counters while any other context is acctive. - */ - if (devinfo->gen >= 8) { - /* Consider that the current report matches our context only if - * the report says the report ID is valid. - */ - report_ctx_match = oa_report_ctx_id_valid(devinfo, report) && - report[2] == start[2]; - if (report_ctx_match) - out_duration = 0; - else - out_duration++; - - /* Only add the delta between if the last report - * was clearly identified as our context, or if we have at most - * 1 report without a matching ID. - * - * The OA unit will sometimes label reports with an invalid - * context ID when i915 rewrites the execlist submit register - * with the same context as the one currently running. This - * happens when i915 wants to notify the HW of ringbuffer tail - * register update. We have to consider this report as part of - * our context as the 3d pipeline behind the OACS unit is still - * processing the operations started at the previous execlist - * submission. - */ - add = last_report_ctx_match && out_duration < 2; - } - - if (add) { - gen_perf_query_result_accumulate(&query->oa.result, - query->queryinfo, - last, report); - } else { - /* We're not adding the delta because we've identified it's not - * for the context we filter for. We can consider that the - * query was split. - */ - query->oa.result.query_disjoint = true; - } - - last = report; - last_report_ctx_match = report_ctx_match; - - break; - } - - case DRM_I915_PERF_RECORD_OA_BUFFER_LOST: - DBG("i915 perf: OA error: all reports lost\n"); - goto error; - case DRM_I915_PERF_RECORD_OA_REPORT_LOST: - DBG("i915 perf: OA report lost\n"); - break; - } - } - } - -end: - - gen_perf_query_result_accumulate(&query->oa.result, query->queryinfo, - last, end); - - query->oa.results_accumulated = true; - drop_from_unaccumulated_query_list(perf_ctx, query); - dec_n_users(perf_ctx); - - return; - -error: - - discard_all_queries(perf_ctx); -} - -void -gen_perf_delete_query(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query) -{ - struct gen_perf_config *perf_cfg = perf_ctx->perf; - - /* We can assume that the frontend waits for a query to complete - * before ever calling into here, so we don't have to worry about - * deleting an in-flight query object. - */ - switch (query->queryinfo->kind) { - case GEN_PERF_QUERY_TYPE_OA: - case GEN_PERF_QUERY_TYPE_RAW: - if (query->oa.bo) { - if (!query->oa.results_accumulated) { - drop_from_unaccumulated_query_list(perf_ctx, query); - dec_n_users(perf_ctx); - } - - perf_cfg->vtbl.bo_unreference(query->oa.bo); - query->oa.bo = NULL; - } - - query->oa.results_accumulated = false; - break; - - case GEN_PERF_QUERY_TYPE_PIPELINE: - if (query->pipeline_stats.bo) { - perf_cfg->vtbl.bo_unreference(query->pipeline_stats.bo); - query->pipeline_stats.bo = NULL; - } - break; - - default: - unreachable("Unknown query type"); - break; - } - - /* As an indication that the INTEL_performance_query extension is no - * longer in use, it's a good time to free our cache of sample - * buffers and close any current i915-perf stream. - */ - if (--perf_ctx->n_query_instances == 0) { - free_sample_bufs(perf_ctx); - gen_perf_close(perf_ctx, query->queryinfo); - } - - free(query); -} - -#define GET_FIELD(word, field) (((word) & field ## _MASK) >> field ## _SHIFT) - -static void -read_gt_frequency(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *obj) -{ - const struct gen_device_info *devinfo = perf_ctx->devinfo; - uint32_t start = *((uint32_t *)(obj->oa.map + MI_FREQ_START_OFFSET_BYTES)), - end = *((uint32_t *)(obj->oa.map + MI_FREQ_END_OFFSET_BYTES)); - - switch (devinfo->gen) { - case 7: - case 8: - obj->oa.gt_frequency[0] = GET_FIELD(start, GEN7_RPSTAT1_CURR_GT_FREQ) * 50ULL; - obj->oa.gt_frequency[1] = GET_FIELD(end, GEN7_RPSTAT1_CURR_GT_FREQ) * 50ULL; - break; - case 9: - case 10: - case 11: - obj->oa.gt_frequency[0] = GET_FIELD(start, GEN9_RPSTAT0_CURR_GT_FREQ) * 50ULL / 3ULL; - obj->oa.gt_frequency[1] = GET_FIELD(end, GEN9_RPSTAT0_CURR_GT_FREQ) * 50ULL / 3ULL; - break; - default: - unreachable("unexpected gen"); - } - - /* Put the numbers into Hz. */ - obj->oa.gt_frequency[0] *= 1000000ULL; - obj->oa.gt_frequency[1] *= 1000000ULL; -} - -static int -get_oa_counter_data(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query, - size_t data_size, - uint8_t *data) -{ - struct gen_perf_config *perf_cfg = perf_ctx->perf; - const struct gen_perf_query_info *queryinfo = query->queryinfo; - int n_counters = queryinfo->n_counters; - int written = 0; - - for (int i = 0; i < n_counters; i++) { - const struct gen_perf_query_counter *counter = &queryinfo->counters[i]; - uint64_t *out_uint64; - float *out_float; - size_t counter_size = gen_perf_query_counter_get_size(counter); - - if (counter_size) { - switch (counter->data_type) { - case GEN_PERF_COUNTER_DATA_TYPE_UINT64: - out_uint64 = (uint64_t *)(data + counter->offset); - *out_uint64 = - counter->oa_counter_read_uint64(perf_cfg, queryinfo, - query->oa.result.accumulator); - break; - case GEN_PERF_COUNTER_DATA_TYPE_FLOAT: - out_float = (float *)(data + counter->offset); - *out_float = - counter->oa_counter_read_float(perf_cfg, queryinfo, - query->oa.result.accumulator); - break; - default: - /* So far we aren't using uint32, double or bool32... */ - unreachable("unexpected counter data type"); - } - written = counter->offset + counter_size; - } - } - - return written; -} - -static int -get_pipeline_stats_data(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query, - size_t data_size, - uint8_t *data) - -{ - struct gen_perf_config *perf_cfg = perf_ctx->perf; - const struct gen_perf_query_info *queryinfo = query->queryinfo; - int n_counters = queryinfo->n_counters; - uint8_t *p = data; - - uint64_t *start = perf_cfg->vtbl.bo_map(perf_ctx->ctx, query->pipeline_stats.bo, MAP_READ); - uint64_t *end = start + (STATS_BO_END_OFFSET_BYTES / sizeof(uint64_t)); - - for (int i = 0; i < n_counters; i++) { - const struct gen_perf_query_counter *counter = &queryinfo->counters[i]; - uint64_t value = end[i] - start[i]; - - if (counter->pipeline_stat.numerator != - counter->pipeline_stat.denominator) { - value *= counter->pipeline_stat.numerator; - value /= counter->pipeline_stat.denominator; - } - - *((uint64_t *)p) = value; - p += 8; - } - - perf_cfg->vtbl.bo_unmap(query->pipeline_stats.bo); - - return p - data; -} - -void -gen_perf_get_query_data(struct gen_perf_context *perf_ctx, - struct gen_perf_query_object *query, - int data_size, - unsigned *data, - unsigned *bytes_written) -{ - struct gen_perf_config *perf_cfg = perf_ctx->perf; - int written = 0; - - switch (query->queryinfo->kind) { - case GEN_PERF_QUERY_TYPE_OA: - case GEN_PERF_QUERY_TYPE_RAW: - if (!query->oa.results_accumulated) { - read_gt_frequency(perf_ctx, query); - uint32_t *begin_report = query->oa.map; - uint32_t *end_report = query->oa.map + MI_RPC_BO_END_OFFSET_BYTES; - gen_perf_query_result_read_frequencies(&query->oa.result, - perf_ctx->devinfo, - begin_report, - end_report); - accumulate_oa_reports(perf_ctx, query); - assert(query->oa.results_accumulated); - - perf_cfg->vtbl.bo_unmap(query->oa.bo); - query->oa.map = NULL; - } - if (query->queryinfo->kind == GEN_PERF_QUERY_TYPE_OA) { - written = get_oa_counter_data(perf_ctx, query, data_size, (uint8_t *)data); - } else { - const struct gen_device_info *devinfo = perf_ctx->devinfo; - - written = gen_perf_query_result_write_mdapi((uint8_t *)data, data_size, - devinfo, &query->oa.result, - query->oa.gt_frequency[0], - query->oa.gt_frequency[1]); - } - break; - - case GEN_PERF_QUERY_TYPE_PIPELINE: - written = get_pipeline_stats_data(perf_ctx, query, data_size, (uint8_t *)data); - break; - - default: - unreachable("Unknown query type"); - break; - } - - if (bytes_written) - *bytes_written = written; -} - -void -gen_perf_dump_query_count(struct gen_perf_context *perf_ctx) -{ - DBG("Queries: (Open queries = %d, OA users = %d)\n", - perf_ctx->n_active_oa_queries, perf_ctx->n_oa_users); -} - -void -gen_perf_dump_query(struct gen_perf_context *ctx, - struct gen_perf_query_object *obj, - void *current_batch) -{ - switch (obj->queryinfo->kind) { - case GEN_PERF_QUERY_TYPE_OA: - case GEN_PERF_QUERY_TYPE_RAW: - DBG("BO: %-4s OA data: %-10s %-15s\n", - obj->oa.bo ? "yes," : "no,", - gen_perf_is_query_ready(ctx, obj, current_batch) ? "ready," : "not ready,", - obj->oa.results_accumulated ? "accumulated" : "not accumulated"); - break; - case GEN_PERF_QUERY_TYPE_PIPELINE: - DBG("BO: %-4s\n", - obj->pipeline_stats.bo ? "yes" : "no"); - break; - default: - unreachable("Unknown query type"); - break; - } + if (oa_metrics) + gen_perf_register_mdapi_oa_query(perf_cfg, devinfo); }